CVE-2023-50868 Affecting bind-libs-lite package, versions <32:9.11.4-26.P2.el7_9.16


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.05% (19th percentile)

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  • Snyk IDSNYK-ORACLE7-BINDLIBSLITE-7246589
  • published12 Jun 2024
  • disclosed14 Feb 2024

Introduced: 14 Feb 2024

CVE-2023-50868  (opens in a new tab)

How to fix?

Upgrade Oracle:7 bind-libs-lite to version 32:9.11.4-26.P2.el7_9.16 or higher.
This issue was patched in ELSA-2024-3741.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bind-libs-lite package and not the bind-libs-lite package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the "NSEC3" issue. The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations.

References

CVSS Scores

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